<template>
	<view class="content">
		<textarea class="result" placeholder="语音识别内容" :value="result"></textarea>
		<view class="recogniz">
			<view style="color: #0000CC;">
				<text>{{ title }}</text>
			</view>
			<view class="partial">
				<text>{{ partialResult }}</text>
			</view>
			<view class="volume" :style="{ width: valueWidth }"></view>
		</view>
		<button type="default" @touchstart="startRecognize" @touchend="endRecognize">按下开始&amp;松开结束</button>
	</view>
</template>
<script>
export default {
	data() {
		return {
			title: '未开始',
			text: '',
			partialResult: '...',
			result: '',
			valueWidth: '0px'
		}
	},
	onLoad() {
		// #ifdef APP-PLUS
		// 监听语音识别事件
		plus.speech.addEventListener('start', this.ontStart, false);
		plus.speech.addEventListener('volumeChange', this.onVolumeChange, false);
		plus.speech.addEventListener('recognizing', this.onRecognizing, false);
		plus.speech.addEventListener('recognition', this.onRecognition, false);
		plus.speech.addEventListener('end', this.onEnd, false);
		// #endif
	},
	methods: {
		ontStart() {
			this.title = '...倾听中...';
			this.text = '';
			console.log('Event: start');
		},
		onVolumeChange(e) {
			this.valueWidth = 100 * e.volume + 'px';
			console.log('Event: volumeChange ' + this.valueWidth);
		},
		onRecognizing(e) {
			this.partialResult = e.partialResult;
			console.log('Event: recognizing');
		},
		onRecognition(e) {
			this.text += e.result;
			this.text ? (this.text += '\n') : this.text = '';
			this.result = this.text;
			this.partialResult = e.result;
			console.log('Event: recognition');
		},
		onEnd() {
			if (!this.text || this.text == '') {
				plus.nativeUI.toast('没有识别到内容');
			}
			this.result = this.text;
			this.title = '未开始';
			this.valueWidth = '0px';
			this.partialResult = '...';
		},
		startRecognize() {
			console.log('startRecognize');
			// #ifdef APP-PLUS
			plus.speech.startRecognize({
				engine: 'baidu',
				lang: 'zh-cn',
				'userInterface': false,
				'continue': true
			});
			// #endif
		},
		endRecognize() {
			console.log('endRecognize');
			// #ifdef APP-PLUS
			plus.speech.stopRecognize();
			// #endif
		}
	}
}
</script>
<style>
.content {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.recogniz {
	width: 200px;
	height: 100px;
	padding: 12px;
	margin: 50px auto;
	background-color: rgba(0, 0, 0, 0.5);
	border-radius: 16px;
	text-align: center;
}

.partial {
	width: 100%;
	height: 40px;
	margin-top: 16px;
	font-size: 12px;
	color: #FFFFFF;
}

.volume {
	width: 10px;
	height: 6px;
	border-style: solid;
	display: inline-block;
	box-sizing: border-box;
	border-width: 1px;
	border-color: #CCCCCC;
	border-radius: 50%;
	background-color: #00CC00;
}

.result {
	color: #CCCCCC;
	border: #00CCCC 1px solid;
	margin: 25px auto;
	padding: 6px;
	width: 80%;
	height: 100px;
}
</style>
